The dominate gene is written as a capital letter. In this case as a T.
A plant that exhibits this genetic inheritance pattern would have a heterozygous genotype, where one allele is dominant and the other two alleles are recessive. This would result in the dominant trait being expressed in the plant's phenotype.
Dominant.
If a plant is heterozygous tall you would use letters such as "T" for "tall" or "t" for short. If a plant is heterozygous tall it means that the "T" is the dominant gene but the plant carries both a dominant and recessive gene, represented by "Tt".
Because the Tall gene in plants is dominant, a plant that has the genotype Tt (Heterozygous) would be a Tall plant.
Because the Tall gene in plants is dominant, a plant that has the genotype Tt (Heterozygous) would be a Tall plant.
It would be definite that you have that gene or trait.
A living thing with a dominant and a recessive gene for a trait is heterozygous. This individual will display the dominant phenotype for that trait but may have offspring that display the recessive trait.
hh X Hh You get two recessives; hh and hh and two heterozygous plants; Hh and Hh
If a plant is homozygous tall then it would possess two tall genes instead of a short gene. If for the notation you use B to represent the dominant tall gene and b to represent the recessive short gene the plant would carry and "BB" compliment of genes.
You would know if you had a dominant gene if you exhibit the trait associated with that gene. Dominant genes override recessive genes when inherited, so if you have a dominant gene, you will express the associated trait in your physical appearance or characteristics. A dominant gene will be expressed in the presence of a recessive gene.
If 75 offspring have a Dominant gene, then the parents must have at least one Dominant gene each. This would make them either Dominant Homozygous (DD) or Heterozygous (Dd) for the Dominant trait.
A dwarf plant cannot have a dominant allele because it has recessive genes. You should look at the genotype, punnett square, of a dwarf plant for the probability of the dwarf plant having a dominant allele. :):):):) hoped this helped, otherwise, sorry! did my best....